Lock



Oct. 25, 1938. A. R. M LAGAN LOCK Filed Oct. 10, 1936 6 m m 4% m RA M\ Ao m Patented Oct. 25, 1938 NIT-Eserg-res York Application October 10,1936, Serial No. 1l)4, 987

8 Claims.

This invention relates to locks, and more particularly to rotor centertumblei type locks for telephone pay station equipment. 7

It is an object of-the inventionto produce a; cheaper, simpler and moretheft-proof look.

In accordance with one embodiment of the invention a lock provided withmovable'an-d fixed tumblershas a barrel or center made up of threeseparate parts, one of which acts as an actuator for the bolt of thelock, the second one ofwhich nests in the. actuator and drives it when akey of proper contour is inserted through thejthird part of the centerwhich serves to-rotatably support the lock center in the case, andprevent the insertion of keys not properly grooved. The bolt actuatorelement of the vlockcenter or barrel nests' in a depression formed inthe base of the lock case, and the part which fits into the actuatorhasan extending edge whichclamps-a flatportion of the bolt of the lockagainst the base of the lock case. -The bolt of the lock comprises aflat plate corrugated at one end toprovide a strong latching portion andhas slots formed therein for cooperationwith the pins which serve tohold the cover andbasetogether to guide the bolt in its movementto andfrom latching position. i

' A complete'understanding of the invention may be. had by referencetothe following description considered in conjunction with theaccompanying drawing, wherein Fig. 1 is a perspective View of a lockembodying the preferred form. of the invention, the cover plate beingremoved to show more clearly the operating parts of the lock and thelock center being shown rotated to a position where the actuator is justbeginning. to cam the bolt out of latching position Fig. 2 is anexploded View of thelock, the relative positions of the parts beingthesame as in Fig. 1;v

Fig. 3 is a sectional view taken substantially along a lineextendingthrough the center of the barrel of the lock with the'lockcenter rotated to a position'at right angles to its normal position andthe bolt partly retracted; j

Fig. 4 is a fragmentary sectional view taken along the line 44 of Fig. 3in the direction of the arrows;

Fig. 5 is a fragmentary sectional view taken along the line 55 of Fig. 4in the direction of the arrows, and

Fig. 6v is a fragmentary .sectional view taken along the line 6-6 ofFig. 3: in the direction of the arrows.

Referring now to the drawing. wherein like reference charactersdesignate the same parts throughout the several" views, a lock case.constituting a preferred embodiment of the invention comprises a base l0and a cover II. The base I0 is provided with mounting lugs: 1-2-42whereby the lock, after beingassembled, may be mounted. The base 19has'a portionthereof bent over as shown at; I 3 to form one of the endsof the lock case, and to form a guide-for a bolt [4 slidable in the lockcase. The latching portion of the bolt M is corrugated as indicated atIE to strengthen it, and the bent over portion [3 of the base H) has anirregular slot lfi'formed therein which corresponds in configuration tothe corrugations formed in the bolt. r a.

Approximately midway between the. upper and lower edges ofv the casing.a circular'depression I1 is formed therein for receivinga bolt actuator[8. The bolt actuator 7| 8 is formed from a flat strip of metal and ispunched'with a rectangular opening 19' formed therein. The: actuatorI'8,. the body portion of which is substantially circular in shape tofit thecircular depression H, has an extending portion formed thereonwhich'extends from the circular body of the actuator and which is bentout .of theplane of the body portion and forms anactuating' armlfl: for.moving the bolt I4 to and -fromlatching position. As shown inFig. 3,the: actuator l8"-has its circular body portion positioned within. thecircular depression. l1 in the baseand'thearm 20: extendsinto anaperture 2| formed in the bolt: v

- Inthe assembled lock a center portion 25. has a' pairof..extendingportions 26 which fit intotherectangular opening .l9lformed in the actuator I8. The center portion of the barrel of thelockis made of a' flat sheetiof metal punched to providethe pair ofextending-portions 26. and a pair. of slots 21.; and .then folded to aU-shaped configuration, as clearly shownin Fig. 2; There are associated.with the" center portion 25 four tumblers 28;. 29; 30- and 31; Threefof"these tumblers; thatis, the. ones designated .28. 29 and 3| arepivotally mounted upon: a pin 32 secured to the base l0. The tumbler 3llis not pivotally mounted, but is held stationary being supported by. thepin 32 and a second pin 33 also mounted upon the base Ill; The' tumblers28', 2-9 and 3| have fiat springs34; .35 and '36, respectively, securedthereto. These: springs 34,. 35 and 3'6 engage-the pin 33'and' normallytend to rock their aperture 45 therein isa stop mmber'46 which.

will move into the slots 31, 38 and 39 when they are aligned by a properkey, but which will prevent the retraction of the bolt when a key havingimproper cuttings is turned in the lockdue to its engagement with theupper portions of one or more of the movable tumblers 28,29 and 3|. Arelatively shallow depression 44 is formed in the member 46 will movewhen the bolt is moved. The fixed tumbler 30 has an irregular face 4']which conforms to the fluting of a key designed for the lock, and thefixed tumbler is so positioned as to extend between the edges of theslots 21 in the center portion 25 when the center is rotated by theproper key. 1

The cover 5 I is made of sheet metal and comprises a front portion 50,sides 5| and 52 and a bottom 53. The sides 51 and 52 are provided withextending lugs 54 and 55, respectively,

.along the edge ll of the aperture 2|.

staked or riveted in slots 56 and 51 formed in the base l0, and threeapertures 6|, 62 and 63 are formed in the front portion. The apertures6| and 62 receive the ends of the pins 32 and 33, respectively, when thelock is assembled, and after the lock is assembled the pins may be upsetto rivet the lock cover II in place on the base-l0. The third aperture63 .is adapted to receive a lock center cap designated generally by thenumeral 64 which" comprises a tubular portion 65 having a shoulder 66formed on one end thereof and having an end 61 formedintegral therewith.The center cap 64 is, adapted to engage the front or right end (Figs. 1,2 and 3) 'of the center portion 25, is adapted to be staked thereon asshown at 68, and is provided with a grooved slot 68 in the end 61'corresponding in configuration to the fluting in the sides of a key. Thetubular portion 65 .of the cap 64 extends through the aperture 63 andthe shoulder. 66 bears on the inner surface of the cover I I, therebyaccurately positioning the cap andthe center portion. and holding allof' the assembled parts in position in the lock. The right end (Fig. 3)of the center portion 25 will engage the portion El of the cap, and atthe left end (Fig. 3) a shoulder"!!! formed on the centerportionz25 willengage the right hand surface of the bolt M In this manner the bolt willbe held in close engagement with the base l0 and any attempt to forcethe look by manipulating the bolt in. a direction transverse to itsnormal direction of movement will be frustrated. T

Althougha specific embodiment of the invention has been describedhereinbefore, it will be understood that the inventionis subject to manymodifications without departing from: the scope of the appended claims.

What is claimed is: 1 1

l. A look for telephone pay station equipment comprising a bolt movableto and from latching position and having a fiat portion formed toprovide cam surfaces and a portion corrugated to provide athickened'andstrengthened latching portion, said corrugations extendingin a direc tion parallel to the direction of movement of the bolt andsome of them also extending at an angle to the direction of themovement-of the bolt, an actuator having a portion extending to engagesaid cam surfaces, and means for controlling the operation of saidactuator including a center cap slotted to receivea key, a center forengaging said actuator and cap, and a plurality of tumblers positionedin the path of a key between the'cap and actuator.

2. In a lock for telephone pay station equipment, key operated tumblers,a bolt controlled by the tumblers, an oscillatable bolt actuator havinga portion thereof in a plane parallel to said bolt and an actuatingportion in the plane base Ill in which the upset portion of the stop 1of said bolt, said portion in the plane parallel to the plane of thebolt having a rectangular opening therein, and a key guide extendinginto said opening;

3. In a lock for telephone pay station equipment, key operated tumblers,a bolt controlled by the tumblers, an oscillatable bolt actuator havinga rectangular opening therein, and a key guide having portions thereofextending into the opening of the actuator and having a shoulder forengaging a surface of the bolt to hold the bolt in a predeterminedplane.

4. In a lock for telephone pay station equipment having a case, movableand fixed tumblers, and a retractable bolt, a center formed in threeparts comprising a bolt actuator oscillatable in a plane parallel to theplane of movement of the bolt and having a portion thereof extendinginto the plane of the bolt for actuating it, a key guide having aportion thereof extending into operating .relation with said actuatorand a shoulder engaging the bolt to hold it in a predetermined plane,and a cap mounted on the key guide and oscillatable in an aperture insaid case, said cap being provided with a shoulder portion for engagingthe casev to hold the key guide in a predetermined position.

5. In a lock for telephone pay station equipment, a case for enclosinglock parts, key actuatable tumblers, a bolt controlled by said tumblers,a bolt actuator oscillatable in said case and having-a rectangularopening therein, a key guide having portions thereof extending into saidopen ing, and a keycap having an irregular slot for the casing. Y

6; Alock for telephone pay station equipment comprising alock center forreceiving a key, a. plurality of key actuatable tumblers, a boltactuator movable by the proper key, and a bolt for actuation by theactuator comprising a sheet of metal having corrugations formed thereinto thicken and strengthen it and having a fiat portion in the plane ofthe said corrugations extending ina direction parallel to the directionof movement of the bolt and some of them also extending at an angle tothe direction of movement of the bolt.

7. A look comprising a casing, a bolt, and means within the casing foractuating the bolt, the extending portion of the bolt havingcorrugations extending in the direction of movement thereof and the wallof the casing having a slot of; the same configuration as across-'se'cti'onfiof the corrugated bolt, thevbolt being m'ountedforreciprocation in said slot,.some of the corruga tions in said bolt alsobeing, formed atan angle to the direction of movement of the bolt tostrengthen it.

8.;A lock comprising 'a casing, a bolt," and means within the casing foractuating the bolt, said bolt having corrugations extending in thedirection of movement thereof, some of said corrugations also extendingat. an angle to the direction of movement of the bolt.

' ALLAN R. MAcLAGAN.

CERTIFICATE OF CORRECTION.

Patent No. 2, l5h,568 October 25', 19

ALLAN R MacLAGAN It is hereby certified that error appearsin the printedspecification l of the above numbered patent requiring correction asfollows: Page 2, second v column, line 50, claim 6, before the word"said" insert actuator; and that the said Letters Patent should be readwith this correction therein that the same may conform' to thereco rd ofthe case in the Patent Office;

Signed and sealed this 10th day of January, A. D. 19 9.

Henry Van Arsdale (Seal) Acting Commissioner of Patents.

